SOPAC Reanalysis for SNARF SOPAC Reanalysis for SNARF and Web-based Analysis Toolsand Web-based Analysis Tools

Yehuda Bock, Peng Fang, Linette Prawirodirdjo, Paul Jamason, RYehuda Bock, Peng Fang, Linette Prawirodirdjo, Paul Jamason, Ruey-Juin Chang, Ian Macleod, George Wadsworthuey-Juin Chang, Ian Macleod, George Wadsworth

Scripps Orbit and Permanent Array CenterScripps Orbit and Permanent Array CenterUniversity of California San DiegoUniversity of California San Diego

Frank Webb, Sharon Kader, Danan DongFrank Webb, Sharon Kader, Danan Dong

Jet Propulsion Laboratory, NASAJet Propulsion Laboratory, NASA

8th SNARF workshop, AGU Special Session, 8th SNARF workshop, AGU Special Session, San Francisco, Dec. 12, 2007San Francisco, Dec. 12, 2007

Data Set

• Global– IGS (385)– ITRF2005 (302 with 252 overlap with IGS)– TIGA (161 out of 276)– VLBI/SLR collocated (114 out of 137)– Doris (30 out of 30)Total 435 (current)

• Regional (northern America)– SCIGN– PBO– OthersTotal 1121 (current)

SOPAC global solutions (ITRF2005, IGS)SOPAC global solutions (ITRF2005, IGS)

SOPAC regional solutions (NA continental) 2007.9SOPAC regional solutions (NA continental) 2007.9

SOPAC regional solutions (Alaska) 2007.9SOPAC regional solutions (Alaska) 2007.9

SOPAC regional solutions (NA continental) 2000.0SOPAC regional solutions (NA continental) 2000.0

SOPAC regional solutions (Alaska) 2000.0SOPAC regional solutions (Alaska) 2000.0

Data Processing StrategyData Processing Strategy(main differences from previous solutions)(main differences from previous solutions)

Reference frameReference frame iterf2005iterf2005

Antenna phase center modelAntenna phase center model Absolute (IGS)Absolute (IGS)

Tropospheric modelTropospheric model Vienna tropo. Mapping functionVienna tropo. Mapping functionOcean tidal loading modelOcean tidal loading model

FES2004 with CMC correctionFES2004 with CMC correction Differential code biasesDifferential code biases DCB for receivers and satellites (IGS)DCB for receivers and satellites (IGS)

Updated software packageUpdated software package GAMIT/GLOBK 10.32GAMIT/GLOBK 10.32Improved ambiguity resolutionImproved ambiguity resolution

Extra data setsExtra data sets TIGA, VLBI-SLR collocated, DORISTIGA, VLBI-SLR collocated, DORIS

Apriori. orbitsApriori. orbits

Apriori. EOPApriori. EOP

OTL modelOTL model

DCB tableDCB table

Ant phs center modelAnt phs center model

Apr. coordinatesApr. coordinates

Aux. tablesAux. tables

Orb/EOP constraintsOrb/EOP constraints

Ref frame constraintsRef frame constraints

GAMITGAMIT

Daily global subnet Daily global subnet solutionssolutions

GLOBKGLOBK

Daily combination Daily combination weekly combinationweekly combination

GAMITGAMIT

Daily global subnet Daily global subnet solutionssolutions

GAMIT

Daily regional subnet solutions

GAMITGAMIT

Daily regional subnet Daily regional subnet solutionssolutions

MATLAB or St_filter MATLAB or St_filter Spatial filteringSpatial filtering

Loosely constrained Loosely constrained solutionssolutions

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Web toolsWeb tools

Position/time seriesPosition/time series

VelocitiesVelocities

Strain/strain rateStrain/strain rate

Model termsModel terms

SeasonalSeasonal

Statistical propertyStatistical property

User application controlUser application control

Reference frame definitionReference frame definition

Selecting sitesSelecting sites

Setting constraintsSetting constraints

Spatial filteringSpatial filtering

Model parameter derivationModel parameter derivation

SOPAC ServicesSOPAC Services

GPS Analysis toolsGPS Analysis tools

• Select sites (SOMI map based)Select sites (SOMI map based)– Bounding box (with/without restrictions)Bounding box (with/without restrictions)– Site group (with/without restrictions)Site group (with/without restrictions)

• CoordinatesCoordinates• Time seriesTime series• VelocityVelocity• Time series fittingTime series fitting• Spatial filteringSpatial filtering• MappingMapping• Crustal modelingCrustal modeling

Site selectionSite selection

Site coordinatesSite coordinates

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